[C320-list] Battery Cable fusing question/conffirmation

[Troy Dunn]

My understanding is that the largest draw by far on a stock C320 under
normal operations is the starter motor which can pull over 200 amps for a
very brief moment due to the inrush of the motor.  The amount of time,
small fractions of a second, is generally no where near long enough to blow
an ANL or MRBF fuse of 200 amps however.... the key word here is generally.
  Therefore it is best to size your fuse to the ampacity of your wiring.
In the case of 1/0 with a 105 temp rating, I would recommend 250 amp fuse.
   If you size the fuse too small and the starter does blow the fuse (this
is generally called a nuisance trip) then you better have spare fuses and
quick reflexes because Murphy's law stipulates this will happen at the
least convenient time.

To find the ampacity of wiring just google blue seas ampacity chart.

To find additional info on battery fusing.   Check out marinehowto.com

Cheers

Troy Dunn
Hull#514